How to tell what gender this is

Hello!
Do you have no clue to tell what gender your chicken is?
We'll here are some easy tips:
1)the wing:
•if its sharper,longer,the first flight feather is longer, it's a male (cock,rooster)
•if it's stubby,shorter, or the flight feather is stubby and short it's a pullet (female,hen)
2)the comb and wattle
•if the comb is pointy,sharp,longer,Etc. It's a male (some times a female will have the same things as a male, it just depends)
•females will have combs as we'll but there's are more stubby and short)
3)spurs
•spurs are pointy sharp talon like things on there feet (on leg)if there are spurs it's a rooster (also again,this can go for females to).
•females will have stumpy spurs
4)THE CROW!
•all males will crow (most)

With respect, I don't think some of these are true. I have never heard of the length of the first primary feather being an indicator of gender and I don't think that works at all.

Both males and females can get spurs, and it's a regular occurrence in some breeds for females to have long, fully developed spurs.

Hens can crow too, although usually only in the absence of a rooster.

Larger combs can indicate males, yes, if you are comparing two birds of the same age and of the same comb type. Otherwise this does not hold true. A female adult leghorn is going to have a bigger comb than a juvenile wyandotte cockerel, for example.